Preparation of barium hexaferrite coatings using atmospheric plasma spraying
| Autor: | K. Richardt, Arto Hujanen, Pertti Lintunen, Giovanni Bolelli, E.S. Olivetti, Darja Lisjak, Luca Lusvarghi, Kirsten Bobzin, Marion Bégard, Massimo Pasquale, Miha Drofenik, Thomas Schläfer |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Annealing (metallurgy) Gas dynamic cold spray Analytical chemistry engineering.material Ferrites Thermal spraying Solid-state reaction Magnetic properties Dielectric properties law.invention Crystallinity Coating law Materials Chemistry Crystallization Thermal analysis Chemical engineering solid-state reaction dielectric properties Ceramics and Composites engineering magnetic properties thermal spraying Powder diffraction |
| Zdroj: | Lisjak, D, Bobzin, K, Richardt, K, Bégard, M, Bolelli, G, Lusvarghi, L, Hujanen, A, Lintunen, P, Pasquale, M, Olivetti, E, Drofenik, M & Schläfer, T 2009, ' Preparation of barium hexaferrite coatings using atmospheric plasma spraying ', Journal of the European Ceramic Society, vol. 29, no. 11, pp. 2333-2341 . https://doi.org/10.1016/j.jeurceramsoc.2009.01.028 |
| ISSN: | 0955-2219 |
| DOI: | 10.1016/j.jeurceramsoc.2009.01.028 |
| Popis: | Thick coatings of barium hexaferrite with the compositions BaFe12O19 and BaCoTiFe10O19 were prepared using atmospheric plasma spraying (APS) technology. The coatings were prepared from pre-reacted powders of the desired composition. The as-deposited coatings were poorly crystallized, but their crystallinity was improved with a subsequent annealing. The crystallization mechanism of the sprayed hexaferrites was studied during annealing up to 1300 °C, using X-ray powder diffraction combined with thermal analysis and with electron microscopy including microanalysis. Single-phase coatings were obtained after annealing treatments at 1100–1300 °C. Their magnetic properties showed that they would be suitable for absorbers at microwave and mm-wave frequencies, depending on the coating phase's composition, the crystallinity and the thicknesses. |
| Databáze: | OpenAIRE |
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